Method of forming one-piece paper containers



Dec. 12, 1950 J. NORDEN 2,534,052

mamon 0F FORMING ONE-PIECE PAPER CONTAINERS Original Filed Dec. 18, 1946 '7 Sheqts-Sheet 1 IN V EN TOR.

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Dec. 12, 1950 J. NORDEN METHOD OF FORMING ONE-PIECE PAPER CONTAINERS 7 sheets-sham 2 Original Filed Dec. 18, 1946 JNVENTOR. JESS/5' NO/FDf/V Dec. 12, 1950 J. NORDEN METHOD OF FORMING ONE-PIECE PAPER CONTAINERS original Filed Dec. 1a, 1946 7 Sheets-Sheet 3 INVENTOR. M5955 /V0A='0/v 14 7'TO/P/VEV Dec. 12, 1950 J. NORDEN' 7 2,534,052

METHOD OF FORMING ONE-PIECE PAPER CONTAINERS Origihal Filed Dec. 18, 1946 7 Sheets-Sheet 4 w T T r INVENTOR.

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' 7 Sheets-Sheet 5 V JNVENTOR. 555 NO/FDf/V J. NORDEN METHOD OF FORMING ONE-PIECE PAPER CONTAINERS Dec. 12, 1950 Original Filed Dec. 18, 1946 Dec. 12, 1950 J. NORDEN 2,534,052

METHOD OF FORMING ONE-PIECE PAPER CONTAINERS '7 Sheets-Sheet 6 Original Filed Dec. 18, 1946 TcylE.

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Dec. 12, 1950 J. NORDEN 2,534,052

METHOD OF FORMING ONE-PIECE PAPER CONTAINERS Original Filed Dec. 18, 1946 v 7 Sheets-Sheet '7 :1 l E INVENTOR. 1 J5$ /VOP0/v him 3 flrro/P/va Patented Dec. 12, 1950 UNITED STATES PATENT OFFICE METHOD OF FORMING ONE -PIECE PAPER CONTAINERS Jesse Norden, Woodmere, N. Y.

4 Claims.

This invention relates to a method of forming one-piece containers, and is a division of my copending application for patent, filed December 18, 1946, Ser. No. 716,959, now Patent Number 2,468,306, issued April26, 1949.

In the field of paper containers, and more especially with respect to milk bottles, there are still improvements to be desired to render them thoroughly practical. The principal objection is that bottles of this type are not suificiently rugged to withstand the rough handling to which they are so frequently subjected, thereby causing the breakages or ruptures which ruin the containers and thus defeat the essential object soughtnamely, that of economy. Other defects reside in the excessive number of parts required to produce a container, accompanied, obviously, by an increased cost of manufacture; they do not lend themselves to "economical, large scale production; they lack the proper contour which makes for easyhandling and compact storage.

I have eliminated the aforesaid inherent disadvantages by constructing a bottle from a single sheet of fibrous material, as paper, which is characterized by maximum strength and rigidity; which permits economical quantity production; and which is fashioned in modern design to expedite handling, packing and storage.

In a general sense, the present invention comprehends a method of forming a container from a rectangular sheet of fibrous material paper for example-which is subjected to double folding in two directions in such manner as to produce a contraction of the original sheet into a relatively fiat form incorporating a Stratified base with manifold flaps extending therefrom which are subsequently deflected upwardly to constitute the body, neck and lip portions.

More specifically, the invention comprises a rectangular sheet of paper which is folded transversely upon itself so that one portion overlaps the other portion. The larger portion is then folded rearwardly whereby it extends beyond the edge of the smaller portion for a distance equivalent to the overlap of the larger portion. Ihereafter the forward and reverse folding operations are repeated with respect to the two portions previously folded, but at right angles to the first forward and reverse fo1dspresenting a rectangular form of reduced pattern which consists of corner flaps having a single thickness of paper, and medial and intermediate flaps of plural layers of paper, all of the flaps designed to be struck-up from the medial flaps, with the corner flaps creased at their diagonal centers and folded exteriorly of, and hugging, the adjacent intermediate fiapssaid flaps thus constituting the body, the upper extremities of which are moulded into a tapering neck provided with a lip having a capreceiving recess.

In the drawings:

Fig. 1 is a top plan view of the blank employed.

Figs. 2 and 3 are perspective views of forward and reverse folding operations.

Fig. 4 is perspective of the sheet after it has been subjected to two double foldings at right angles to each other-the position of the flaps after subsequent flexing being shown in dotted lines.

Fig. 5 is a top plan showing the shape of the components after they have received a preliminary upward folding, and Fig. 6 is a front elevation thereof.

Fig. 7 is a fragmentary View of the lower ex tremity of the form illustrating the relationship of the flaps.

Figs. 8 and 9 are top .plan views exhibiting the manner of pleating the flaps to produce the body.

Fig. 10 is a side elevation of the container as it appears subsequent to'the completion of the folding operations.

Fig. 11 is a vertical sectional elevation taken along lines I l--l I of Fig. 10.

Fig. 12 is a top plan of the container as depicted in Fig. 9.

Figs. 13, .14 and 15 are side elevations of the container showing the difierent stages in the formation of the neck and lip, and the reinforcements therebetween, and

Fig. 16 is a top plan view of the receptacle in its final form.

As will be seen in Fig. 1, I begin with a rectangular sheet of paper it which is scored or similarly weakened transversely at equidistantly spaced intervals ll, [2, l3 and I l, and at right angles theretosee I5, I6, H, and i8, so that the scorings intersect centrally to form a miniature checkered design IS, in the present example, consisting of nine squares 28. To further facilitate folding, the corners 2!, 22, 23 and 2 of sheet I B are diagonally scored at 25.

With the scored delineations serving as a guide, the next step consists of folding the sheet forwardly along line I3see Fig. 2and reversely at H. Then with the portions folded as indicated at the front edge of Fig. 3, the sheet is folded forwardly along line H at right angles and then reversely at l6, also illustrated in Fig. 3. Succinctly, each of the preceding steps involves double folding operations-forward and reverse-and one set of folding operations transpires at right angles to the other set, with the result that I form a perfect rectangle of reduced pattern and incorporaitng a bottom 25 with nine superimposed layers (Fig. 7)or all of the quares 29 of the checkered design l9and corner flaps 2 l, 22, 23, and 2d, of one thickness and triple layered intermediate flaps 21, as will be observed in Fig. 4. Thereupon, the corner flaps are folded at their diagonal scoring lines 25 and caused to assume a triangular shape. Subsequently all of the flaps are struck-up vertically from the bottom, the intermediate flaps constituting the inner side walls of a square container body and the corner flaps radiating therefrom, as shown in Figs. and 6.

, The corner flaps are then wrapped spirally and anti-clockwise, about the side walls (Figs. 8 and 9) and the container takes on the form eX- hibited in Figs. 10 to 12 inclusive, wherein in addition to the fortified base, it will be observed that due primarily to the spiral windings of the corner flaps, the thickness of the side walls is progressively increased to impart further strength and to provide an abundance of paper at the upper extremity just where it is required, that is, to permit crushing and molding of the paper by suitable compression in the form of a tapered neck 28, with shoulders 29 reinforced by the ribs 30, and a lip 35! having an annular recess 32 to receive a suitable capall of which latter portions are of ample thickness of stock to effectively resist rough handling. (Figs. 1316.)

The sheet from which the container is manufactured is preferably impregnated with a desirable waterproof material, as paraffine. This serves to make the folds adhere to each other, as well as, to impart rigidity to the bottle, in its entirety.

The ultimate container also possesses strength in the maximum degree. The square shape with fiat sides makes this bottle easier to grip and hold; the short neck insures easy pouring like a pitcher, with no gurgling and practically no dripping; these bottles pack square, requiring 43% less room in a given space than the old style round bottle; and they may be manufactured in mass quantity production at a cost of only a few pennies each, which permits of their being thrown away when emptied, and which further, avoids the expense of washing and sterilizing equipment.

I claim:

1. The herein described method of forming a container from a rectangular sheet of fibrous material which consists of first folding the sheet upon itself forwardly and reversely along one set of spaced, parallel lines, folding the resulting folds similarly along a second set of spaced, parallel lines disposed at right angles to the first set of lines'and intersecting same at the center of the 5- sheet, and folding the intermediate portions extending from the outer points of intersection of the two sets of lines diagonally so as to constitute multiple body and bottom panels.

2. The herein described method of forming a container from a rectangular sheet of fibrous material which consists of first folding the sheet upon itself forwardly and reversely along one set of spaced, parallel lines, folding the resulting folds similarly along a second set of spaced, parallel lines disposed at right angles to the first set of lines and intersecting same at the center of the sheet, and folding the intermediate portions extending from the outer points of intersection of the two sets of lines diagonally so as to form side walls having Z-pleats with spirally wound flaps and multiple bottom panels.

3. The herein described method of forming a container from a rectangular sheet of fibrous material which consists of first folding the sheet upon itself forwardly and reversely along one set of spaced, parallel lines, folding the resulting folds similarly along a second set of spaced, parallel lines disposed at right angles to the first set of lines and intersecting same at the center of the sheet, and folding the intermediate portions extending from the outer points of intersection of the two sets of lines diagonally so as to form side walls of triple thickness with reversely, spirally wound layers and a bottom having nine thicknesses.

4. The herein described method of forming a container from a rectangularsheet of fibrous material which consists of providing the sheet with two sets of plural scorings which are disposed at right angles to, and intersect each other at the center of the sheet, and diagonal scorings extending from the outer points of intersection of the two sets of scorings, folding the sheet upon itself forwardly and reversely along the scorings of one set, folding the resulting folds similarly at right angles to the first fold, and folding the intermediate portions along the diagonal scorings so as to form multiple body and bottom panels.

JESSE N ORDEN REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 775,268 Flowers Nov. 15, 1904 1,046,050 Bliss Dec. 3, 1912 2,046,628 Hoff July 7, 1936 FOREIGN PATENTS Number Country Date 811,476 France Jan. 18, 1937 

